As far as I know, JSDoc does not create pages for all or any property. You can expect JSDoc to automatically create pages for the deeply nested properties of the object, but this is not the case. For example, there is an open problem on Github: simplifying the link to the properties of an object .
The JSDoc output for the UnitTesting namespace in the code you submitted is as follows (using the default template):

I assume that you expected the test1 property to be clickable and that it will lead you to a page containing information about test1 (for example, that it has an innertest1 method). Unfortunately, this is not the case.
The documented code path is slightly related to its architecture (for example, JSDoc provides support for classes, modules, mixins, namespaces, etc.). In my experience, good architecture helps write accurate documentation. The JSDoc template you use may affect your perception hierarchy. For example: some templates create a namespace tree.
Anyway, in this particular example / architecture, your options are:
- Adding another
@namespace for PluginTests . - Adding an
@property entry for innertest1 to the PluginTests .
Examples.
1: add @namespace
Adding @namespace to PluginTests will lead to another page of the namespace, in particular for PluginTests , and will contain the necessary information:

The change to the code you provided is obvious, but I will just include the part that has been modified for completeness:
PluginTests: {}
2: Add @property to innertest1
Instead of creating another namespace, you can write the property test1.innertest1 in the PluginTests :
PluginTests: {}
This will add an additional property table to the description of test1 :

Side note
You may need to use a basic template to format your documentation. It is still being actively developed (by Googlers) and is subject to change. One of the reasons I sometimes use them is: it's easier to navigate. From the docs:
An extensible table of contents helps users find what they are looking for. In addition, a summary at the top of each page shows users what is documented on this page.
The only drawback is that Baseline does not yet support the second option.